EP 4112312 A1 20230104 - INK SET AND IMAGE RECORDING METHOD
Title (en)
INK SET AND IMAGE RECORDING METHOD
Title (de)
TINTENSATZ UND BILDAUFZEICHNUNGSVERFAHREN
Title (fr)
JEU D'ENCRES ET PROCÉDÉ D'ENREGISTREMENT D'IMAGE
Publication
Application
Priority
- JP 2020034206 A 20200228
- JP 2020145006 A 20200828
- JP 2021002678 W 20210126
Abstract (en)
To provide an ink set and an image recording method, by which bleeding in an image is suppressed and image cracking is less likely to occur. The ink set including an ink containing water, a pigment, a pigment dispersion polymer A, and a water-soluble polymer B, and a treatment liquid containing water and at least one selected from the group consisting of a polyvalent metal salt, an acidic compound, and a cationic polymer, in which the pigment dispersion polymer A contains a specific acid group and an aromatic ring, and the water-soluble polymer B contains a specific acid group and a constitutional unit represented by General Formula (1), and in the ink, a mass ratio of a content concentration of the water-soluble polymer B to a content concentration of the pigment dispersion polymer A in a liberated polymer is 1.6 or more, and an image recording method. R<sup>1</sup> represents a hydrogen atom or a monovalent substituent, Y<sup>1</sup> represents a monovalent substituent, A<sup>1</sup> represents -O-, and L<sup>1</sup> is a divalent linking group.
IPC 8 full level
B41J 2/01 (2006.01); B41M 5/00 (2006.01); C09D 11/037 (2014.01); C09D 11/322 (2014.01); C09D 11/54 (2014.01)
CPC (source: EP US)
B41J 2/01 (2013.01 - EP); B41M 5/0017 (2013.01 - EP); B41M 5/0023 (2013.01 - US); B41M 7/0018 (2013.01 - US); C09D 11/033 (2013.01 - US); C09D 11/037 (2013.01 - US); C09D 11/106 (2013.01 - EP); C09D 11/107 (2013.01 - EP US); C09D 11/322 (2013.01 - EP US); C09D 11/326 (2013.01 - EP); C09D 11/38 (2013.01 - EP); C09D 11/40 (2013.01 - EP US); C09D 11/54 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
US 2022372320 A1 20221124; CN 115103886 A 20220923; CN 115103886 B 20240402; EP 4112312 A1 20230104; EP 4112312 A4 20230726; JP 7376681 B2 20231108; JP WO2021171876 A1 20210902; WO 2021171876 A1 20210902
DOCDB simple family (application)
US 202217871372 A 20220722; CN 202180013734 A 20210126; EP 21761580 A 20210126; JP 2021002678 W 20210126; JP 2022503178 A 20210126